WITH x (*1W ) { ADD y _C1_ } does not add to word beyond window

[unhammer]

grammar:

DELIMITERS=".";


WITH (n) IF
    (*1W (adv))                 # _C1_
{
    ADD (@subj) (*) ;
    ADD (@advl) _C1_ ;
};

input:

"<a>"
	"a" n
"<b>"
	"b" vblex
"<.>"
	"." sent

"<c>"
	"c" adv

output:

"<a>"
	"a" n @subj WITH:4 ADD:7
"<b>"
	"b" vblex
"<.>"
	"." sent

"<c>"
	"c" adv

expected:

"<a>"
	"a" n @subj WITH:4 ADD:7
"<b>"
	"b" vblex
"<.>"
	"." sent

"<c>"
	"c" adv @adv WITH:4 ADD:8

[mr-martian]

I think the issue here is that using _C1_ as a target was implemented as "create a set that is (*) if it's the same cohort and non-matching otherwise", so something more complicated will be needed in order to span windows.